The Tides of Time (ISBN 0-345-31838-2) is a science fiction novel by John Brunner.

It was first published in the United States by Ballantine Del Rey Books in 1984.

[1] The novel tells the story of two people on an isolated island.

Every morning, they wake to a different life in a different time, and not always one that seems like the "real" past.

Dave Langford reviewed The Tides of Time for White Dwarf #78, and stated that "Brunner's philosophical contention probably needs a whole book.